Well you know, taking someone's words and twisting them back at them usually indicates that you're challenging what they said. So the answer to your question would be "because you give all the right indications that you are challenging them."
I think you're mad that I hit the nail on the head, and you're embarrassed about it (which is why you wouldn't give the real reason earlier in the thread) and now you're trying to get revenge passively aggressively.
